Measuring device for liquids



June 22, -1943. F. wQGuiBRT- ETAL I MEASURING DEVICE FOR LIQUIDS Filed Dec. 27, 1938 e Sheet-Sheet 1 Fr n'c fi fill/er BY ATTORNEY June 22, 1943. v w. GUIBERT ETAL 2,322,436

" MEASURING DEVIQE FOR LIMQUIDS I 9 Filed Dec. 27, 1958 s Sheets-Sheet 2 I N VENTORS fi'ancl's W. fiulberf f're ie ,5 F //er BY Z44) ATTORNEY June 22, 1943. F. w. GUIBERT EI'AL 2,

MEASURING DEVICEFFOR LIQUIDS Filed Dec. 27. 19523 7 s Sheets-Sheet 4 luv: N TORS f'raqclls 14 Gal/1621') Fma erl'c Fuller J ATTOR NEY June 1943. F. w. GUlBERT ET AL MEASURING DEVICE FbR LIQUIDS Filed Dec. 27, 1938 e Sheets-Shet 5' I N V E N TO R5 Franc/ls W (fa/barf June 22, 1943. GUlBERT ET AL 2,322,436

MEASURING DEVICE FOR LIQUIDS Filed Dec. 27, 1938 6 Sheets-Sheet 6 l N V E N TO R 5 Franc/I5 I44 (ill/her) fer/1: .6. Ful/er BY 3am) ATTO IQNEY Patented June 22, 1943 MEASURING DEVICE ron i rgurns,

Francis W. Guibert, Beverly Hills, and Frederic B. Fuller, Whittier, .CaliL said EFuller assignor to said Guibert Application December 27, 1938, Serial No. 247,965 22 Claims. (Cl. 221-101) This invention relates to a device for controlling the fiowof liquid; and especially to one that can be set at will to deliver batches of liquid of predetermined volume.

An apparatus of this general character is described and claimed in a copending application,

filed in the name of Francis W. Guibert and Frederic B. Fuller, on August 5, 1936, under Serial Number 94,408, and entitled: "Adjustable liquid metering device, now Patent No. 2,222,660 granted November 26,1940, The presentapplication is a continuation in part, of said prior patent. The essential elements of such apparatus include a flow measuringdevice, such as a water meter, va valve controlling the flow, apparatus manually operable for opening the valve, and an automatic control for causing the valve to close upon a'predetermined delivery. This last element is arranged to be adjusted or set to cause the valve to deliver any desired quantity of liquid Within the limits of adjustment afforded by the mechanism.

Theapparatus may be utilized in general wherever accurately predetermined quantities of liquid are to be delivered, as for example, water for a concreteor cement mixture, or gasoline from a gasoline reservoir.

It is one of the objects of this invention to improve in general, apparatus of the character referred to.

It is another object of this invention to make it possible, during the delivery of .the liquid, readily to ascertain the amountof liquid already delivered, the amount yet to bedelivered in the cycle, as well as the total amount to be delivered.

It is still another object of this invention to improve the accuracy of the apparatus.

.It is still another object of this invention to make it possible tomanually control the delivery of liquid even after the cycle is initiated, either to reduce the rate of flow, or to stop it entirely, orto cut the cycle short; all with a single operating lever. Inthis connection, the apparatus is so arranged that such manual control may be optionally prevented.

It is a further object of this invention to provide apparatus of the character disclosed having means to relieve the metering mechanism of the work of operatingthe timing mechanism, thereby improving the accuracy of the measurement.

This invention possesses many other advantages, and has other objects which maybe made more easily apparent from a consideration of several embodiments of the invention. Forthis purpose there are shown a few forms in the drawings accompanying and forming part of the present specification. These forms, which illustrate the. generalprinciples iof, the invention, will nowjbe described in detail; but itlis to be understood'that this detailed description is not to be taken infa limiting sensa'since the scope of the invention, is best defined by the appended claims.

Inthe drawings:

Figure ,1 is a front elevation of a device embodying the invention Fig. .2 is a top plan viewof thedevice shown in Fig. 1;

Fig. 3 .isa section on an enlarged scale as seen on plane 3+3 of. Fig. '2; t

Fig. l is a cross-section on an enlarged scale as seen on plane 4*! of Fig. .3;

Fig. 5 isaIfragmentarysectionas seen on plane 5-5of Fig, 3; I

Fig. .6 isQa longitudinal section as seen substantially on plane 6-56; of Fig. 3i

Fig. "7 is a horizontal section on an enlarged scale as seen substantially on plane.'l-l of 'Fig. 1, in; showing only the timercaseiand contained mechanism? Figf8 is a front view of the timer with the v(lover removed, substantially as seen on plane .88 ofiFig. 7,

Fig.19is a detail section as seen on plane 59 of'Fig. 7;.

Figs. 10, 1'1 and 12 are fragmentary sections as seen on correspondingly numbered planes of Figs. 13, 14, 15 and 16 are fragmentary sections as seen substantially on correspondingly numbered vplanesof Fig. 11

Fig. 1? is afragrnentaryelevation as seen from the right of Fig-=11 Fig. l8 ,is a detail section as seen on plane .8-,-l 8-of Fig. 14; and

Fig. 19 is a fragmentary view, mainly diagrammatic, showing a modification of the timer mechanism.

The liquid metering deviceincludesthree main elements: a liquid-measuring device; a control valvethrough vvhichthe liquid to be metered is passed; and a trip or control mechanism by means of which the valve is operated to close at the end of a metering cycle.

These elements may ,all be assembled into a compact unit, as best shown in Figs. 1 and 2. Thus the trip and control mechanism is all mounted within a metal case I, havinga-detachable cover 2 permitting ready access to-the mec a ism a rry n s W n ow 3, 1lf llroughwhi h' ndica in :mea a sib as well as the operating member or handle 4. The control valve is mounted within another casing which is secured to the back of the timer casing i. The liquid measuring device 6 also includes a housing which is attached to the control valve housing, as well as to the back of the trip mechanism casing l. The unit is supplied with suitable supporting feet I by. meansof which it may.

be mounted on a base or other suitable support.

After a predetermined amount of liquid has been delivered, as determined by the liquid measuring device, the trip mechanism operates to close the valve. This completes the cycle which began with the opening of the valve.

The control valve 5 may belocated anywhere in the path of the liquid flow, but in the present form of the device, it is located so that the liquid passes through it, and then into the measuring to be used.

The control valve is shown. generally in Figs. 3 and 6. Its specific details are of no'importance so far as the present invention is concerned.

The valve 5 has a body member or casing [2 which is provided at its left hand end as shown in Fig. 6 with a series of bosses by the aid of which the flange 30! of the liquid metering device 6 (Figs. 2, 3 and 6) may be attached. This flange 30! is provided with an extension passage 16 leading into the casing of the meter 5 and forming a discharge passage from the valve housing l2. In order to provide a fluid tight connection between the meter 6 and the casing 12', an appropriate sealing means or gasket 303 may be interposed between them. The opposite end of the casing I2 is shown as closed by a cover member 3ll4. j g

The inlet conduit 8 is attached .to a Jones 305 (Fig. 6) formed on casing I2. The water for other liquid passes through conduit 8 into body l2, and its further passage into extension I6 is controlled by the aid of a stem 29. The body l2 includes a screen I! in order to strain the liquid before it enters into the valve parts enclosed withinthe screen IT. M M

In order to make it easyto remove such foreign matter asv may reach the outside of the screen ll, this matter is allowed to collect in a sump l8 (Fig. 3). The accumulated matter may be withdrawn by the opening of a tap ZO-(Figs. 1 and 2) which is attached to cover'304, b'ya pipe extension, l9. H

The degree of opening of the valve 5 is determined by the axial position of stem 29 (Figs. 3 and 6). This stem may, if desired, be maintained in a position intermediate the fully open and the fully closed positions to permit valve 5 to discharge at a dribbling rate. This position is obtained automatically by aid of the control apparatus to be hereinafter described.

The valve structures herein illustrated are claimed in application Serial No. 290,009, filed August 14, 1939, in the names of Francis W. Guibert and' Frederic B. Fuller, and entitled Valve.

The control of the stem 29 in order to urge in this instance by the aid of an operating member or handle 4 illustrated in Figs. 1 and 2. The operating mechanism between the operating handle 4 and the pilot valve stem can be best explained in connection with Figs. 1; 2, 3, 5, '7, 8, 9, 10, 11, 12, 13, 14, 15, 16, and 17.

As shown most clearly in Fig. 3, the valve stem 29 extends into the passage l5, and its left hand end is shown as engageable by the operating end of a rocking arm 65. This arm 55 is shown as .'mounted on a shaft 66 (Figs. 3 and 5) and exthe valve to opening position is accomplished tending into the casing I42 enclosing the measuring device. Thus the back wall 68 of the trip mechanism l is shown in Fig. 5 as having an aperture335 around the edge of which is fastened the flange 3355 of the sleeve 5'! through which the shaft 56 passes. This sleeve 6? is shown (Figs. 2 and 5) as extending from the housing I42 of the liquid metering device 6.

In order to prevent passage of any liquid from the liquid metering device 5 into the trip mechanisml past the" wall 63 there are provisions, as illustrated in Fig. are provide a seal around the shaft 66. This may be in the form of a packing 331 surrounding the shaft 66 andcompressed by the aid of a compression spring 338 acting on the gland collar 339.

The left hand end of the shaft 55 carries the crank arm 69 (Figs. 5 and 8). This lever in turn (Fig. 8) has pivoted at its free extremitya cone necting link 18. posed Within the trip mechanism casing l. The link 10 in turn is connected to one arm of a rocking lever ll supported on a stub shaft 12 appropriately journaled in the wall 53. The other arm of lever fl is connected to a link 13. This link 13 as shown most clearly in Fig. 8 is provided with a slot I25 in which a pin 490 is accommodated. This pin is shown to best advantage in Figs. 8 and 11. The pin 408 is carried by an arm 14. Movement of arm 14 toward the right as viewed in Fig. 8, will first of all take up the lost motion between pin 40!] and the end of slot I25. Thereafter, link 13 is pulled toward the right, swinging lever H in'a clockwise direction. This clockwise motion in turn causes link If! to be pulled toward the left and crank arm 69 to be rotated in a counterclockwise direction. This movement of the crank arm 69 causes a corresponding movement of the rocking arm 65 (Fig; 5) which in turn causes the valve stem 29 to be urged toward opening position. The extent of movement of the arm l4 therefore controls the extent of opening of the valve 5.

The arm l4 and its operation are best disclosed in connection with Figs. 7, 8, 11, 13 and 14. This arm 14 forms one of several projections formed on a lever 15 which may be termed the control driven arm. The shaft l6 upon which lever 15 is mounted, is journaled in a boss i1 (Figs. 7 and '12) projecting from the rear wall 68 of the casing I for the control mechanism. At its front end, shaft i5 is similarly journaled by a bracket 18 (Figs. '7 and 8) attached in any convenient manner to a projection or ear 340 projecting inwardly from the right hand wall of casing I.

A mechanism is provided whereby a clockwise rotation of handle 4 will cause a clockwise rotation of the arm 15 about the axis of shaft 16. The handle 4 (Fig. 12) is securely attached to the forward end of shaft 75 so that this shaft will be rotated by movement of the handle 4. The shaft 16 is shown as projecting through the iorward wall of the cover 2, so as to make it The arm 59 and link 1!] are dis-' possible for; the handle 4 to be conveniently .attached. Shaft I6 carries a driving arm 9,i-.( Figs. 12, 15 and 17) whereby operation of handle 4 causes corresponding movement-of arm 8|. This driving arm has a flat, .hard wearing plate 98 attached thereto, which is adapted'to engage the bottom edge 89 of a latch plate 88. This plate is fastened tothe left hand-edge of a latch arm 81 pivoted on the driven arm I5, as-by the aid of a pin 80. The. latch arm-8i is urged by the spring 84(Fig. 8) in acounterclockwise direction so as to maintain the plate 88 (Fig. 15) inoperative relation with the plate 90. This spring is anchored to an eye 88 on the. arm "I and to a stop pin 85 carried by the-latch 8!. This pin 85 alsoserves to limit the counterclockwise movement of the latch SI by the aid of the stop arm I9 (Fig. 14-) carried on the driven arm I5.

As: shaft 15 is turned in a clockwise direction (Fig. 15) by clockwise movement of the operatinghandle 4, the plate 90 engaging the surface 89 will raise the latch arm 8i and thereby the controldriven arm I5 will be correspondingly rotated in aclockwise direction, performing the function of opening the valve 5.

The operation of thehandle 4 in this manner maybe such that the valve 5 may be held open to any desired extent, corresponding to the apeular movement of the shaft 76. However, provisions are made for making it possible to release the handle 4, and yet to maintain the arm I5 in any one of several open positions; that is, either-a dribble positionora fully open position.

Forthis purpose use is made of a rocking pilot latch member I2-I (Figs. 8, 10, 11 and. 1'7). This member is mounted for rotation about a shaft or pin |06-disposed somewhat-below and to the left of shaft L6. This pin is attached at its inner end in a boss 34I (Figs. '10 and 11) formed on the rear wall 68 of easing I.

Thelatch member "I 2| carries alatch extension I22 having a stepped surface I24. It is urged continuously in a clockwise direction by a tension spring I23 anchored to an ear 342 (Fig. 17) formed integrally with the latch member .I2I. Thelower end of the spring I23 is anchored to a stationary anchor piece III (Fig. 8.).

The extension I22 is preferably made from hardened material so as to resistwear.

Cooperating with the latch extension 182 is a flat sided latch stud or knife edge I 7, 8, .11, 13, and 14). This latch stud is carried on the arm I5. :Due to the tension of spring I23 the plate I22 is swung until its righthahd edge is in contact with the narrow edge of the stud 120 (Fig. 8).. Now as the arm I5 is rotated in a clockwise direction about the axis of the shaft 16, and from the positionof Fig. 8, the latch stud I20 moves upwardly to a position where the stepped surface I24 engages underneath the'latch stud I20. Thus arm 15 and connectedjparts are releasably retained in valve opening position. If there is no further rotation of the arm I5 the valve 5 is open to a'dribbie or intermediate position, the lost motion of slot I25 having been taken up, and valve stem 29 having been moved part way. However, by rotating the arm I5-fun ther, the top of the latch extension I22 can pass underneath the latch stud I28, and the valve 5 v is latched in fullyopen position, and remains latched or releasably retained until the .latch member I2! is rotated in a counterclockwise di- .rection so as to release the latching stud I28.

The latch extension I22 is=prevented from passing too far to the right by having an extension 380 (Fig.1?) of; suifieient length tocontaet the edge. of stud I20, when thisstud is'in its upperm tpo itim In actual operation, the driving ar1n=8l maybe rotated by the aid of the handle :4, so as to lift the. latch arm 8I only part way, the. latch stud I20 resting on the stepped surface I24; or else the arm 9 I may be sWung as'far as permitted by themechanism to cause the latchplatetl and therefore thecontrol-driven arm 15 tobe moved to fully open valve position. The driving arm 9'! is limited against too far travel by the aid ofa stopping pin 93 (Fig. 15) projecting from the back wall 68 of the casing I. "IhisWstop pin 83' is intendedito engage with the pad,'92 shown as formedintegrally with the arm 9|.

The-stub shaft I06 also rotatably-supports the pilot detentlever I08 (see Fig. 14),. Detent lever N38. has; an upstanding arm or lock I-I2 with a stepped uppensurface having a high and a low portion, II;3 andI M, respectively thereon. These surfaces cooperate with a tooth or :boss -I I5 depending from the control driven arm I5. Boss I.I5 rests on surface ,II4 when arm I5 is in its lowermost position, serving to prevent further rotation of the arm in response to-spring IIE.

Detent lever I08 is urged to rotate in aclockwise direction about'its supporting shaft I06 by a tension spring I09 which is attached. to an arm II0 on the detent and the common anchor 1 III on the base of case I. With the control driven arm I5 in its lowest position, rotation ofdetent lever I08. is .prevented by the surface which jointssurfaces I13 and 'I I4 abutting the left side of boss H5. When the control driven arm-151s turned clockwise about the axis of its supporting shaft I6 sufficiently to permit these contactingsurfaces to clear,the.detent lever I08 will be turned, to bring the upper surface I I3 under boss H 5. This prevents arm I5 returning toits initial position until detent lever I08..-is swung counterclockwise to its original position. Excess movement'of the detent lever I08 is prevented by extension 204 carried thereby contacting member or arm 202 which may be considered as fixed at this time.

The arrangement is such that, assuming the valve 5130 have been opened, as previously 'described by clockwise rotation ofhandle 4, a counterclockwise rotation of the handle 4 and corresponding counterclockwise rotation of .the driving arm 9I causes the 'pilot latchmember I2! tobe rocked-out of the path of the latch stud I20. The angular motion of the pilot latch member I2'I may'be optionallyvlimited so as to cause the latch stud I20 .to drop on to the stepped surface I24 (Fig. 17), or it may be large enough to permit the latch stud I 20 to drop to the initial position of Fig. 8. Themeehanism whereby this unlatching may be effected will now ,be described. For this purpose attention is directed to Figs. 8, 15 and 17.

Thus the driving arm 9| carries a lever arm I21 to which is "pivoted a-link I28 (see particularly Fig. 1'7). The pilot latch-member I2I has a lever arm I29 which carries a pin 34:3 passing through slot I30 in the link I28. Link I28 thus forms a lost motion connection between the operating handle 4 andmember I2I. The 'pilotlatch member I2I also has a radial extension I33 which is adapted to engage a cooperating radial extension I32 formed on the pilot detent I08 (Fig. 14) when the latch member 121 is turned counterclockwise. Now upon sufiicient counterclockwise rotation of shaft I6 to which the handle 4 is attached, the link I28 is pulled far enough upwardly to rock the pilot latch member |2| out of the path of the latch stud I29. Due to the engagement of extensions I32 and I33, pilot detent lever I98 is also swung sufiiciently to bring its upper surface 3 far enough to the left to clear boss I I5. Accordingly the control driven arm 15 is permitted to return to the initial position of Fig. 8, as by the aidof a suitable tension spring ||6 attached to the eye 344 on the arm 15. This spring IIB extends to the common anchor I ll.

Provisions are made to return the handle 4 to' its vertical position of Fig. 1 after it is released. This centralizing mechanism is illustrated to best advantage in Figs. 7 and 16. Thus freely rotatable about the shaft 16 are a pair of rocking centralizers 95 and 96. One of these, such as 95, includes the arms 91, 98 and 99; the other centralizer 96 includes arms |9|, I92 and I93. The arms 91 and 9| are urged to engage opposite sides of an extension 94 of the latch plate 99. This is accomplished by providing a tension spring I99, of considerable force, joining the arms I93 and 99. The arms 98 and 192 are urged thereby respectively against opposite sides of the stop pin 93.

Thus if the driving arm 9| is turned clockwise, the rear centralizer 95 turns with it, since extension 94 engages beneath the arm 91. The equalizer 96 is prevented from turning in this direction by stopping arm I92 engaging the stop 93. Accordingly the spring I 99 is stretched by movement of arm 99 away'from arm I93. Now if the force on'handle 4 is released, the force of spring I 99 acting through the arm 99, arm 91 and plate 94, returns the driving a'rm 9| to the central position. Similarly, if the arm 9| is turned in a counterclockwise direction, the front centralizer 99 turns with it, since plate extension 94 engages the arm |9|. The rear centralizer 95 is prevented from turning in this direction by stop arm 98 engaging the stop pin 93. Thus arm I93 moves upward and stretches the spring I99. As soon as the handle 4 is released the centralizer spring I99 acts to return the driving arm 9| to the central position of Fig. 16.

As thus "far described, only the manual operation of the valve has been set forth. With nothing further, it is clear that the movement of the handle 4 in either direction will serve to control the opening and closing of the valve 5, as well as the degree of opening. Furthermore, by the aid of the'various latches described; the: valve can be maintained in'open dribble position, or in full open position; and by counterclockwise movement of the handle 4, the valve 5 can be returned to the dribble position and left there or else upon continued movement of the handle 4 the valve can be caused to close entirely. By virtue of look I I 2, the mechanism cannot be returned to its original position except by appropriate rotation of handle 4.

However, an automatic control is provided such that after the valve 5 has been opened either to dribble or full open position, the valve is caused to close irrespective of the position of the handle 4, after a predetermined amount of liquid is delivered through the valve 5.

We may assume for the present that the valve 5' has been opened and that control driven arm 15 i latched by the aid of the latch extension I22 and latch stud I29 in the fully open position. It is clear that in order to cause the valve to close it is merely necessary that the pilot latch member |2| and the latch extension I22 be rotated in a counterclockwise direction. 1 This is action.

complished by the aid of the arm 292 shown to best advantage in Figs. 7, 8, 13, 14, 16 and 17. This arm 292, which as heretofore stated, serves as an abutment for the abutment pad 295 of the latch member |2|, is shown as formed integrally with a lever 299 (Fig. 8). This lever is mounted for free rotation about the pin I99. When the arm 299 is moved downwardly, or in a counterclockwise direction as viewed in Fig. 8, the arm 292 first engages the extension 294 of the pilot detent lever I99; and soon thereafter engages the abutment pad 295 of the pilot latch member |2|. The control driven arm 15 is then freed from these latches and it returns first to a dribble position and then to the closed position of Fig. 14. The manner in which this lever 299 is depressed for this purpose will be described in connection with the automatic delivery mechanism.

At the same time, lever 299 ensures that the holding of the handle 4 in the opening position toward the right will not prevent the valve 5 from closing. For this purpose lever 299 is provided with an arm 83 (Figs. 7 and 16). This arm 83 when the lever 299 is swung downwardly, operates on the pin 82 of the pivoted latch arm 8| (Figs. '7, 15 and 16). This latch arm therefore is swung outwardly as viewed in Fig. 15, and the connection between the driving arm 9| and the driven arm 15 is destroyed. The latch plate 88 is urged far enough toward the left to cause it completely to clear the plate 99 of the driving arm 9|. Arm 83 (Fig. 16) is provided with concentric arcuate faces centering on the axis of shaft 19 when the arm 299 is in the valve closed posi- These arcuate faces are respectively in contact with the left hand edge I94 of extension 94 of plate 99, and the pin 82. Thus rotation of arm 9|, carrying plate 99, is not interfered with, should it be desired to operate valve 5 manually as heretofore described.

The arm 83 is prevented from being swung too far to the right by its abutting the edge I94 of the extension 94 of the plate 99. This abuttin relation is illustrated in Fig. 16.

The arrangement is such that upon a predetermined quantity of liquid passing through the valve 5, the end 293 of arm 299 is depressed in order to close the valve 5 in the manner just described. This mechanism i quite similar to that described in the earlier filed application hereinbefore referred to. 7

It may be assumed for the present that the passage of the liquid through the liquid measuring device 6 rotates a shaft I19 in a counterclockwise direction (Figs. 3 and 4). This shaft I19 extends through an aperture 349 in the rear wall 98 of the trip mechanism casing and carries at its end a driving pinion |1| (see also Fig. 8) This driving pinion |1| is in mesh with a gear wheel |12 (Figs. '7 and 8) freely rotatable on a shaft I13 which is journaled in the boss I99 at the rear of casing l. counterclockwise rotation of the pinion |1| thus causes a clockwise rotation of the gear I12. This clockwise rotation of gear H2 is finally translated into a clockwise angular rotation of an operating arm I96 (Figs. 7 and 8) the end of which ultimately engages the projection 293 of'the lever 299 and performs the valve closing operation hereinbefore described. The train of gearing whereby this is accomplished will now be set forth.

Operating arm |96 is shown as being formed integral with a drum 92. The hub 341 of this drum is shown as pinned to the shaft I13. The shaft I13 also carries a pointer I14 cooperating in the bearing: standard I 9 I 1 provides. a journal for the. :shaft I13.

a manner to be hereinafter described with a dial '-2I8. This pointer as willbe describedherein- 'after, indicates the'total amount of-liquid' that has been delivered in any one cycle.

Theshaft I13 is driven-in a clockwisesdirection in order to drive the arm I96 by-theaid'0f a gear I19 fixed'to the shaft I13 as by pins348 (Fig. '1). This'gear in turn is driven from gear I12 through a transmission mechanism of comparatively large reduction. gear I12 causes a corresponding rotation'ofan arm I16 attached to the'gear wheel. I12. .This arm I16 carries a pin or stubshaft' I11uponwhich is freely rotatable a planetary pinion I18. This planetary pinion has a .wide face-and; engages with the gear I'IQas well. as withla ear. 1.88;.w7hich may be considered for the presentuasstationary.

By appropriate choice of thesrelativesnumbengtof teeth in gears I19randi I88 the,.-planetary; rolling wof pinion I18 upon .the. gearIBfl .zwill cause ;.the j gear I19 to be rotatedzat a slowtarateiinia clockwise direction. For'example, shy: ;making.1the

-.number of: teeth of .gearl I19ione lessthan on gear I88, for eachzcomplete revolution of gear. I12 .the

gear I19willihave advanced by one; toothrin: a clockwise direction. If the number;of..the;teeth :in gear I19 is sufficiently close .toithe .numberof teeth "in gear 180, the teethonpinion I118I1e8d not be specially formed.tobejnsufiicientlfi ood contact with both sets of teeth.

. As thedriving pinion IN. is rotatedinlaccord ance. with the amount of liquidobeing. delivered .throughvtheimetering. device .6; the shaft. I13;.is

thus angularlysadvanced; and therefore thezarm I I95 is correspondingly advanced.

During clockwise .motion of ..arm *1I96; .and

drum I92 as just. described;.a.zclocki;spring' I93 .is wound-up. sthedrum :ISZ. Its outer endtlldisrattached, to

its zinner This clocktspring is located within thei inner surface of the 'idl'llm I .92. .end is attached; toxa pin I94 that extendsfrom This standard: 1 also Upon completion .of the delivery :cyclepby movement of arm I96)from-its;initialzposition of F'ig.-8 to: thedepression of lever jmfllithezgspring I193 is rendered. effective to:.return -.the;arm1595x15 this; initial position..-. II-IOW1i7hiS; .is accomplished will now be: described.

The gear wheel I88, which.it wasassumed was stationary during the. period of liquid'zdelivery, ."is' shown as .mounted uponythe-backiiof ;a,;cog wheel I82 as by the aid of the screws: 34,9. {This "cog wheel, with gear I88, is ireeltorotate;on;the .hLlb of..the gear I19. During :the; delivery; cycle thecog wheel .I 82 is restrained. fromrmovement "in either. direction, so .thatthe. planeta yvtransmission is effective angularlyto. advancethe gear I.19,.and therefore the. shaft-I13; V

. Thisrestraint is provided: .byza'alocking pawl @IBS (Figs. 7, 8..and 13). .shown .as .carriednby; an arm'il84.havin r.a;hub

Locking; pawl-.1183 ;is

freely rotatable onthe pin I06. iT-heti pcking ypEtWl I83 .is urged teward looking positionby a tension spring ,I 85 I anchored to, :the, ear- 18. .2011

- the. armol fl l. and-.anchoredat its lowergendzin the: common. anchor: III I .The locking pawl: arm 3 4-84. :carries a proj ection; 138,.whibh; isladapted. to be. engaged by thezarni l81iormedxintegraltwith the driven arm.:15. When. the valve 5:1's lclosed.

and the control driven arm is in the position MofFig; 13; the arm lfil urges the -locking ..paw1 erm I-M against the tension of spring-' I 85 tobthe freeing p0sition- -shown in Fig. 13.-. -However, when the control driven arm =15 is moved in: a: 1

Thus rotation of by. arm: .lfifisis therefore: adjusted.

eclockwise :direction and; latched, in either of its 1 two open positions the arm I31-perrnits the pawl 1.83. to. engage the teeth 0f.the cog;wheel I82; accordingly 1 wheel I82 is. locked even before the Now as arm 280 is depressed at }the end .of the. cycle .by the operating;arm. I98, thecontrol .drivenarm 15 is. returnedto theposition or Big. 13 and the cog wheel; I82 is. freed. ,fIThisoccursas 10 .soon..as.the valve.f5;c loses. At thesametime,

athepinion I1 I. stops. rotatingxalnd gear wheel; I12 .is;sta'lled. Accordingly; the clockv spring I 93, is free to actto movearm. I96.;in a counterclockwisedirection. lhis angular movementflf arm .15 I96 causes;.a;corresp.0nding.angular movement of shaft I.13;..thepointer Inland gear I19. This gear rotates pinion 118,..the axis of which is now stationary; andtherefore gear; E80. is rotated by the. pinion. I18. ...Gear J80, biengjoinedto. cog

v.wfheel. I32, rotates this; .wheel -;in a counterclockwise. direction.-

. Ifothescog gwheel I82 would'be left locked by .pawl..i33,..shaft.:Iiit would be prevented from returningitoi its starting position,.;because. then pinion; I18 .wouldalsobe stalledand wheel I19 would'beldcked; this wheel. I19 being. directly ..joined.,to.shait; I13,- wouldlock the shaft against rotation.

Provisions; are made. .to. ensure; theunlocking .ineffective for this .purpose,..as..by failure of the :valve; 5 .to-close. For, this purpose the .lever 2.88

and its arm 282 isintendedtocooperate with the padiiflis -.on. extension; 201.011. pilot detent .lever; I88, positively; .to .freethe lockingpawl :I 83

..upon... a sufficiently. continued. downward .move- :ment ofthe-parmz 2.88; .(Figs.:8.and .13).

..i-.The clock spring I93 returns. the .operatingann @195: .to :the initial positiomas determinedby. an

.40 .adjustable stop.;l8 ;.WhiC11 cooperates withv a jecting through.theafronttwall .ofdthe cover: 2 :..andjournaled therein. "Thisshaft 2H1. is also journaled near. its tinnerr end ;in.the extremity --...of-an.arm 2H :shown as integralzwith the bearmg standard IEII that supportsathe shaft I13.

J.R.otati0n of :shaft 2w by. the aid of a handle 2I2 cau'ses thestop i193 tolbe advancedor retracted asLdesired;

: :This setting .gear12fi8al'so carries the; dial, 2 E3 :(Figs. 1.: and '1) with..which the pointer. L15 co- ...-operates. The amount of .liquid .toi be. delivered -tinieach cycle-is indicated on dial 22i8 by the stationaryupointer 2J9 (Fig; .1) supported from the a. edg'ewof the fiangc 3.58 "(Fig 7) which supports itheie ass window. 3. Thislglass. window is pro- I vided so as to enable theoperator to view the dial 2 I81 and pointer 1.14. It-is supportedon the outside 01" the-cover 2. as by the aid of-the fianged ring 451i (Fig. 7).

9 Thus as handle zlz is rotated, the dial 253 is correspondingly rotatedand thepointer; 2I9 indicates the-quantity of liquid that-is-to be delivered. 1 For the setting :shown in Fig. 1, the delivery-is set at 3.6 units; which maybe in gallons or any other quantity The pointer L14 during the setting of dial 2I8 remains at the zero of the dial 2I8; this is so because it is attached to the end of the shaft I13; this shaft in turn as heretofore stated, is urged by the clock spring I93 in a counterclockwise direction until stops I91 and I98 are in engagement. 7

Now assuming that delivery of the liquid begins, the pointer I14 moves in a clockwise direction and indicates directly on the dial 2I8 what I quantity has already been delivered and also what quantity requires to be delivered before the pointer I14 reaches the shut-off position indicated by the stationary pointer 2I8.

It may be desirable at times to ensure against unauthorized adjustment of the quantity to be delivered in a cycle. For this purpose the adjusting or setting shaft 2I8 may be locked. For example, the shaft 2 I8 carries a locking gear 2I3 (Figsr'l and 9). This locking gear is carried on the hub of the pinion 289. This gear 2I3 can be locked by a spring pressed pawl 35I, slidable in an aperture in the cover 2, and projecting out of the casing. It is urged toward locking position by the aid of a compression spring 228. The

In the position shown in Fig. 9 the adjusting mechanism is locked by pawl 35I. By pulling upon the projection 2I1 toward the right, the

. adjustment mechanism may be released. In order to prevent unlocking movement of the looking pawl 35I, the handle 2I5 and the bracket 2I6 may be provided with apertures 229, 238, 23I and 232 adapted to be in registry when the looking pawl is effective. Through any pair of apertures 229, 23I, or 238, 232, may be passed a padlock preventing movement of the handle 2I5. If

it is desired tolock the device, against delivery,

of any liquid Whatever, the padlock may be passed through the slot v.228 in the extension 221 of the handle 4, as well as through the alined apertures 229 and 23I. .By passing the padlock through the alined apertures 238 and 232, the

adjusting mechanism is locked, but the handle 4 may be swung in a direction to open the valve; but the padlock serves as a stop to prevent the handle 4 from being turned in acounterclockwise direction...

It may be noted that if the handle'4 is 'left unlocked, it may be'moved in a counterclockwise direction, even after a delivery cycle is started, to place the valve in dribble position. This dribble continues until the valve 5 is ultimately fully closed by operation of the arm I96 on lever 288. Alternatively it is possible to move the handle 4 in a counterclockwise direction still further to close the valve entirely, and if the handle ,4 is

held so that the plate 98 holds the control driven arm 15 slightly raised, then even if the valve 5 is entirely closed, the locking pawl I83 for the.

ensure that the locking pawl I83 remains in con tact with the cog wheel I82. In other words, the

pointer I14 is stopped in an intermediate position, indicating part delivery of a cycle, Upon reopening the valve 5 by moving the handle 4 in a clockwise direction, either to dribble or full open position, this cycle may be completed. Alter-,

natively, however, the handle 4 may be turned far enough to permitarm 15 to return to the position of Fig. 14; thereby arm I81 depresses the projection I88 of the locking pawl arm I84, disengaging pawl I83 from cog wheel I82. Under such circumstances, the pointer I14 as well as the control mechanism is returned to the beginning position of Fig. 1.

When the operating arm I98 at the conclusion of a cycle depresses lever 288, it is seen that the pilot latch member I2I is first moved to the dribble position, and then later onit is moved to the fully closed position. This prevents the creation of injurious water hammer, the valve 5 closing in a number of steps.

It may be required at times to adjust the dial 2I8 and the pointer I14 to deliver such a small quantity of liquid in a cycle that the operating arm I96 has an initial or starting position such that it is still in contact with the lever 288. Under such circumstances, the valve 5 can be opened only to dribble position. As seen in Figs. 15 and 16, when the lever 288 is partially depressed, the latch arm 8I carried by the control driven arm 15 is 'rocked slightly toward the left, so that the plate 98-is out of contact with the narrow lower step 89 of plate 88 on the latch arm 8|. Accordingly, when the driving arm 9| is rotated in a clockwise direction by the handle 4, it will clear this stepped surface 89, but it will ultimately engage the upper stepped surface 235 of plate 88; this occurs only after the lost motion is taken up between plate 98 and step 235. Accordingly complete rocking of the driving arm 9I will raise driven arm 15 only suificiently to engage the latch stud I28 with the lower stepped surface I24 of the pilot latch member I2 I. V

The liquid meter mechanism 6, is utilized to operate the shaft I18 (Fig. 4) for operating the control mechanism I.- A housing I42 is provided for the metering elements. This housing I42 as the packing 356. Where the shaft I18 passes through the flange 355, a collar 351 is fastened to the flange; this collar tightly encompasses the shaft I18. Disposed around the shaft are the chevron packing rings 358 urged toward the collar 351 by the compression spring 359 located within the boss 354. The right hand end of the spring 359 abuts the stationary collar 368.

The measurement of the liquid is primarily effected by a pair of substantially identical rotors I40 and MI rotatably supported within the housing I42. The housing has a sealed cover 362. The rotors I48 and MI are of such axial length that their end surfaces are in fluid tight contact with the opposed surfaces of case I42 and cover The rotors have shafts I18 and 38I rotatably supported as by the aid of anti-friction ball bearings I43, located in appropriately formed rece SeS 1n the casing wall and in the cover 362.

justable stop I98. The mechanism is now ready to function again at the beginning ofanother cycle.

The force required for the rotation of the gear wheel I12 '(Figs. '1 and 8) is provided by'the torque created by the rotors of the meter. The turning moment is transmitted to this gear through the pinion I1I. In some instances it may be preferable for the sake of greater accuracy, to relieve the metering device fi irom' this load.

In the form oi the invention illustrated in Fig.

'19, provisions are made for accomplishing this result. The metering device in thisfo'rm serves merely as an escapement for power stored in a long tension spring 2, which thus constitutes a power storing device. The control mechanism is substantially the same as before. The shaft I13 now carries a supplemental pinion 231. Meshing with this pinion is a gear segment 238, pivoted on a pin 239. Fig. 19 shows the spring 24I entirely without tension, and segment 238 in its furthermost position toward the left. This position corresponds to the return of shaft I13 to starting position, the valve 5 being closed. If a tension be placed on spring MI by pulling its free end toward the right, a force will be exerted on segment 238 that would impress a torque on pinion 231 and urge shaft I13 to rotate in a clockwise direction. However, this force is controlled by the rotation of the rotors in the metering device 6. In other words, the segment 238 is allowed to rotate in this direction only when the metering device 6 permits it.

The right hand end of spring 24I. is shown as joined to the arm 240 integral with the control driven arm heretofore described. The power spring 24I is so arranged that when the arm 15 is rocked in a clockwise direction, it will store energy in the power spring 2M by stretching it.

If it is desired to open the valve 5 with this mechanism, the arm 15 first takes up the lost motion connection between slot I'and pin 4%, the lock H2 on pilot detent lever I88 being then effective to prevent the arm 15 from returning to its starting position. The slot I25 may be made longer so as to cause the spring 2M to be stretched to a desired degree prior to the open:

ing of the valve. When the valve opens, the spring 2 has sufficient stored energy to drive the control mechanism through the segment 238, pinion 231 and shaft I13.

The meter rotors now rotate, but they act merely as an escapement for the control mech anism which is driven, forward by the power spring 2.

Nearthe end of the cycle the procedure at first is the same as in the form illustrated in Figs; 7 and 8. The lever 200 first acts to disconnect the latch arm 8I from the operating handle 4; then lock I I2 is withdrawn; then the latch extension I22 is withdrawn in two steps from below latch stud I20, and the valv'e5 closes first to dribble then to closed position; Immediately thereon the stopping pawl I83 is disengaged. The control driven arm 15 which is permitted extra travel, continues still further under the pull of the power spring 24I until the tension on'this power spring is completely relieved, 'after which the clock spring I93 returnsthe shaft I13 and the pointer I14 to their original setting. This latter action also returns segment 238 to the position of Fig. 19. The slot I25 in the link 13 is elongatedsufficiently toward the left to permit the return of the spring 24I to a fully relaxed position;

aszagsc What is claimed is:

1. In a device of the character described, a control valve, means for operating said valve,'including a control driven arm for causing said valve to open, means for releasably retaining said driven arm in full valve opening position or 0ptionally in a position to cause less than full opening of the valve, means, operating upon the delivery of a predetermined amount of liquid through the valve, to release said driven arm, means for adjusting the said operating means, whereby to alter the amount, the delivery of which will cause said operating means to act, a driving arm to actuate said driven arm to a position where it is releasably retained, and means adapted to form an operating connection between the driving arm and the driven arm, said means including a latch plate carried by one of said arms and movably with respect to said one arm, and having stepped surfaces, and means carried by the other arm cooperating with the latch plate whereby movement is transmitted from the driving arm to the driven arm, said latch plate being movable on its supporting arm from a position where it transmits the full motion of the driving arm to the driven arm to cause the valve to open fully, to a position where it transmits the motion of the driving arm to the driven arm to cause the valve to open only partly, as well as movable to a position where it is incapable of transmitting any motion from the driving arm to the driven arm, and means for causing said latch plate to assume said position that causes the valve to be opened only partly, said means being operated in response to the adjustment of said operating means for delivery of a predetermined amount of liquid below a definite value.

2. In a device of the character described, a control valve, means for operating said control valve, including a control driven arm for causing said valve to open and to close, means for latching said driven arm in valve opening position, unlatching mechanism including an operating arm operating from a starting position, as well as means for moving said operating arm in accordance with the amount of liquid delivered through the valve, said mechanism also including return means to return the operating arm to starting position, means, operating in response to the movement of the driven arm toward valve opening position, to lock said return means, and means for operating the unlatching mechanism to release the driven arm to cause the valve to close, as well as for unlocking said return means, and actuated by the operating arm at the end of the delivery cycle.

3. In a device of the character described, a control valve, means for operating said valve, including a control driven arm for causing said valve to open and to close, means adapted to be moved in one direction for actuating said driven arm, means for latching said driven arm in valve opening 7 position, unlatching mechanism including an operating arm operating from a starting position, as well as means for moving said operating arm in accordance with the amount of liquid delivered through said valve, said mechanism also including return means to return the operating arm to' starting position, means, operating in response to the movement of the driven arm toward valve opening position, to lock said return means, means for operating the unlatching mechanism to release the driven arm to cause the. valve to close, aswell as for unlocking said return means; and actuated by theoperating arm at the end of the delivery cycle, and means operating upon a reverse movement of said actuating means for unlocking said return means.

4. In a device of the character described, a control valve, means for operating said valve, in cluding a control driven arm for causing said valve to open and to close, means adapted to be moved in one direction for actuating said driven arm, means for latching said drivenarm in valve opening position, unlatching mechanism including an operating arm operatingfrom a starting position, as well as-means for moving said operating arm in accordance with the amount of liquid delivered through said valve said mechanism also including return means, to return the operating arm to starting position, means operating in response to the movement of the driven arm toward valve opening position, to lock said return means, means for operating the unlatching mechanism to release the driven arm to cause the valve to close, as well as for unlocking said return means, and actuated by the operating arm at the end of the delivery cycle, and means operating upon a reverse movement of said actuating means for unlatching the driven arm and for unlocking said return means.

5. In a device of the" character described, a control valve, means for operating said valve, including a control driven arm for causing said valve to open and to close, means adapted to be moved in one direction for actuating said driven arm means for latching, said driven arm in valve opening position, unlatching mechanism including an operating arm operating from a starting position, as well as means for moving said operating arm in accordance with the amount of liquid delivered through said valve, said mechanism also including return means to return the operating arm to starting position, means for operating in response to the movement of the driven arm toward valve opening position, to lock said means for operating the unlatching mechanism to release the driven arm to cause the valve to close, as well as for unlocking said return means, and actuated by the operating arm at the end of the delivery cycle, and means operating upon a reverse movement of said actuating means for reducing the valve opening.

6. In a device of the character described, a control valve, an arm for operating said valve, said arm having at least two positions, corresponding respectively to closed and open positions of the valve, means for moving said arm to a definite valve opening position, means for returning said arm to valve closing position, means whereby said arm is releasably retained in said valve opening position, means movable in accordance with the amount of liquid delivered through the valve, and capable of attaining an ultimate position, such as to release said arm to permit its return to valve closing position, said releasable means being retained in stationary position and serving to retain the armin valve opening position until said movable means is at least close to its ultimate position, an energy storing device connected to said arm for operation thereby to store substantial energy upon application of force moving the arm toward valve opening position, and a connection for supplying said stored energy as motive power to said movable means.

7. In a device of the character described, a control valve, an arm for operating said valve, said arm having at least two positions, corresponding respectively to closed and open positions of the valve, means for moving said arm to a definite valve opening position, means for returning said arm to valve closing position, means whereby said arm is releasably retained in said valve opening position, means movable in accordance with the amount of liquid delivered through the valve, and capable of attaining an ultimate position, such as to release said arm to permit its return to valve closing position, said releasable means being retained in stationary position and serving to retain th arm invalve opening position until said movable means is at least close to its ultimate position, saidmovable means including a transmission mechanism moved continuously with the passage of liquid through the valve, and an energy storing device connected to said arm for operation thereby to store substantial energy upon application of force moving the arm to valve opening position, said energy storing device being connected to said transmission and supplying motive power thereto.

8. In a liquid delivery device, a valve through which the liquid passes, a liquid flow meter for measuring the quantity of liquid delivered, and a valve control system comprising, an operating member, mechanism operatively connecting said member with the valve for causing the valve to open in accordance with movement of said member, means urging the valve to closed position, means for releasably retaining said mechanism to hold said valve partly or completely open in accordance with the extent of saidmovement, and means for releasing said retaining means and operated by movement of said operating member in a direction opposite to that which opens the valve.

9. In a liquid delivery device, a valve through which the liquid passes, a liquid flow meter for measuring the quantity of liquid delivered, and a valve control system comprising, an operating member, means supporting said member so that it iscapable of optional movement in either of two directions from a neutral position, mechanism operatively connecting said member with the valvefor causing the valve to open upon movement of said member in one direction from its neutral position, means urging said mechanism to valve closing position, means for re leasably retaining said mechanism in position to hold said valve partly or completely open in accordance with the extent of said movement, means for releasing said retaining means and operated by movement of the operating member in the other direction from its neutral position, a transmission connected to the meter, and means operating upon predetermined travel of said transmission for releasing said retaining means.

10. In a liquid delivery device, a valve through which the liquid passes, a liquid flow meter for measuring the quantity of liquid delivered, and a valve control system comprising, an operating member, means supporting said member so that it is capable of optional movement in either of two directions from a neutral position, mechanism operatively connecting said member with the valve for causing the valve to open upon movement of said member in one direction from its neutral position, means urging said mechanism to valve closing position, means for releasably retaining said mechanism in position to hold said valve partly or completely open in accordance with the extent of said movement, means for releasing said retaining means and operated by movement of the operating member in the other direction 'from its neutral position, a transmission connected to the meter, and means operating upon'pre'determined travel of said transmission for releasing said retaining means, the releasing imeans operated by the transmission including an element which operates to causethe valve to close while the operating member is stationary, and for any position thereof. v

11'. In a liquid delivery device, a valve through which the liquid passes, a liquid flow meter for measuring the quantity of liquid delivered, and a valvecontrol system comprising, an operating member, mechanism operatively connecting said member with the valve for causing the valve to open, or to close in accordance with the direction of movem'ent'of said member, said mechanism including an operating arm movable between an initial position and a definite valve closing position, in accordance with the quantity of liquid delivered, for causing the valve to close when a predetermined quantity of liquid has been delivered, means returning said operating arm to its initial position after said arm has operated to cause the valve to close, and means, when said operating member is operated to cause the valve to close prior to the delivery of said predetermined quantity, for maintaining said returning means ineffective.

12; In a liquid delivery device, a control valve through which the liquid passes, a liquid flow meter for measuring the quantity of liquid delivered, means for operating the valve, including a control driven arm for causing said valve to open and to close, means for latching said driven arm in a definite valve opening position, a driving arm to actuate said driven arm to its latched position, means operating upon the delivery of a predetermined quantityv of liquid through the valve to unlatch the driven arm and, cause the valve to close, means to adjust the amount of said predetermined quantity, including a rotatable locking gear, and a pawl for releasably engaging said gear to prevent rotation thereof, means operable by a reverse movement of the driving arm for unlatching said driven arm, and means for optionally'restraining said' driving arm from reverse movement, said means also serving to maintain said pawl in engagement with the locking gear.

13. In a liquid measuring device, a liquid flow meter,-a control valve for the liquid, means for opening the valve including a control driven arm, means adapted to engage said arm for releasably maintaining said arm in valve opening a position, means, including an operating arm, for

releasing said engaging means in response to the delivery of a predetermined amount of liquid through the meter, for causing the valve to close, means for adjusting the amount of angular travel required by the operating arm to cause said arm to affect the releasing means, a scale connected to the adjusting means, a stationary pointer cooperating therewith for indicating the amount of liquid to be delivered in a complete delivery cycle, another pointer operating in unison with the operating arm and cooperating with the scale to indicate directly the amount of liquid delivered at any instant, and means for returning the operating arm to its initial position upon completion of a delivery cycle.

14; In a device of the character described, a control valve, means for operating the valve, including a control driven arm for transmitting force to the valve for causing the valve to Open or to close, means for urging said arm to valve closing position, means for latching said arm in a definite valve opening position, and means movable in one direction to caus the arm to open the valve, and movable in another direction for releasing the latching means to cause the arm to return the valve to closed position under the infiuence of said urging means.

15. In a device of the character described, a control valve, means for operating the valve, including a control driven arm for transmitting force to the valve for causing the valve to open or to close, means for urging said arm to valve closing position, means for latching said arm in a definite valve opening position, a driving arm movable in one direction to actuate said driven arm to its latched position, means operating upon the delivery of a predetermined amount of liquid through the valve to unlatch said driven arm and cause the arm to return the valve to closed position under the influence of said urging means, and means, operable upon a reverse movement of the driving arm for optionally unlatching the driven arm at any-time during the delivery of said predetermined amount.

16. In a device of the character described, a control valve, means for operating the valve, including a control driven arm for transmitting force to the valve for causing the valve to'open or to close, means for latching said arm in a definite valve opening position, a driving arm to actuate said driven arm to its latched position, means operating upon the delivery of a predetermined amount of liquid through the valve to unlatch said driven arm and cause the valve to close, means, operable upon a reverse movement of the driving arm for optionally unlatching the driven arm at any time during the delivery of said predetermined amount, and locking means for optionally restraining said driving arm from reverse movement, comprising a lever connected for movement with the driving arm, and means adapted to forma stop for engaging said lever.

17. In a liquid measuring device, a liquid fiow meter, a valve controlling the flow of the liquid, means for opening the valve, means including a rotatable operating arm for causing the valve to close in response to the delivery of a predetermined amount of liquid through the meter, means for adjusting the amount of angular travel required by the operating arm to cause said arm to afiect the valve, a scale connected to the adjusting means and movable therewith, a stationary pointer co-operating with the scale for indicating the amount of liquid to be delivered in a complete delivery cycle, another pointer operating in accordance with the movement of the operating arm and co-operating with the scale to indicate directly the amount of liquid delivered at any part of the cycle, means for returning said operating arm to its initial position, and means responsive to passage of liquid through the meter for causing said returning means to operate upon completion of a delivery cycle.

18. In a device of the character described, a control valve, means for operating the valve, including a control driven arm movable into any one of a plurality of positions for opening the valve to an extent corresponding to the chosen position, means for latching said arm in any one of said positions against return of the arm to a valve closing position, and for releasably holding said arm in said chosen position, and means movable in one direction to move said arm to- 'ward valve opening position, and in another direction for releasing the latching means.

19. In a device of the character described, a control valve, means for operating the valve, including a control driven arm for causing said valve to open and to close, means for latching said driven arm in a definite valve opening position, a driving arm, means adapted to place said arms in operative relation, whereby movement of the driving arm serves to actuate said driven arm to its latched position, means operating upon the delivery of a predetermined amount of liquid through the valve to unlatch said driven arm and cause the valve to close, and mechanism co-operating with said last mentioned means for placing the driving arm out of operative relation with the driven arm when the delivery cycle is completed.

20. In a device of the character described, a control valve, means for operating said valve, including a control driven arm for causing said valve to open, means for releasably retaining said driven arm in full valve opening position or optionally in a position to cause less than full opening of the valve, means operating upon the delivery of a predetermined amount of liquid through the valve to release said driven arm, means for adjusting the said last mentioned op.- erating means whereby to alter the amount, the delivery of which will cause said last mentioned operating means to act, a driving arm to actuate said driven arm to a position where it is releasably retained, and means adapted to form an operating connection between the driving arm and the driven arm, said means including a latch plate carried by one of said arms and movable with respect to said one arm, and having stepped surfaces, and means carried by the other arm cooperating with the latch plate whereby movement is transmitted from the driving arm to the driven arm, said latch plate being movable on its supporting arm from a position Where it transmits the full motion of the driving arm to the driven arm to cause the valve to open fully, or to a position where it transmits the motion of the driving arm to the driven arm to cause the valve to open only partly, as well as movable to a position where it is incapable of transmitting any motion from the driving arm to the driven arm, and means for causing said latch plate to assume said position that causes the valve to be opened only partly, said means being operated in response to the adjustment of said last mentioned operating means for delivery of a predetermined amount of liquid below a definite quantity, said last mentioned operating means including means for moving said latch plate to said last mentioned position near the end of the delivery cycle.

21. In a liquid delivery device, a valve through which the liquid passes, a liquid flow meter for measuring the quantity of liquid delivered, and a valve control system, comprising an operating member, mechanism connecting said member with the valve for causing the valve to open or to close, dependent upon the optional movement of said operating member, means for releasably maintaining said mechanism in valve opening position, a transmission connected to the meter, and means operating upon predetermined travel of said transmission for releasing said mechanism, said connecting mechanism including a lost motion element whereby said releasing means is operative to cause the valve to close for any position of said operating member, and while said member is stationary.

22. In a liquid delivery device, a valve through which the liquid passes, a liquid flow meter for measuring the quantity of liquid delivered, and a valve control system, comprising an operating member, mechanism operatively connecting said member with the valve for causing the valve to open or to close in accordance with the direction of movement of said member, means movable between an initial position and a definite valve closing position for causing the valve to close independently of said operating member when a predetermined quantity of liquid has been delivered, means for returning said movable means to its initial position after said movable means has operated to cause the valve to close, and means for optionally rendering said returning means effective or inefieotive when the valve is closed by operation of said operating member,

, said means for optionally rendering said returning means eITective or inefiective being provided with relatively movable surfaces that are adapted to engage for rendering said returning means effective upon a sufficient movement of the operating member toward valve closing direction.

FRANCIS W. GUIBERT. FREDERIC B. FULLER. 

